Deploy the openid helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy an OpenID Helm chart on Kubernetes using Pulumi, you will be utilizing the `helm.sh/v3.Chart` resource from the Pulumi Kubernetes package. This resource allows you to deploy a Helm chart into a Kubernetes cluster. The Helm chart you're deploying will be the OpenID Connect provider chart.

Here is a step-by-step overview followed by the Pulumi TypeScript program:

1. **Set up Pulumi Kubernetes Provider**: To interact with a Kubernetes cluster, Pulumi uses a provider that needs to be configured with the appropriate kubeconfig. In this example, we'll assume that the kubeconfig is already set up and available on your system or through the environment variable `KUBECONFIG`.

2. **Instantiate the Helm Chart Resource**: You will create an instance of `helm.sh/v3.Chart`, referencing the OpenID Connect Helm chart. This will install the chart into your cluster with any specified values.

3. **Define Configuration (Optional)**: If the OpenID Connect Helm chart requires any configuration values, you can specify these using the `values` property of the `Chart` resource. These values override the default settings of the Helm chart.

Now, the Pulumi TypeScript program to deploy the OpenID Connect Helm chart:

```typescript
import * as kubernetes from '@pulumi/kubernetes';

// Define the OpenID Connect Helm chart details.
// You should replace 'chart-name' with the actual name of the OpenID Helm chart and
// provide the repository where the Helm chart is stored.
const openidChart = new kubernetes.helm.v3.Chart('openid-helm-chart', {
    chart: 'chart-name',
    version: 'chart-version', // Replace with the chart version if known
    fetchOpts: {
        repo: 'https://helm-repo-url/', // Replace with the actual repo URL
    },
    // If configuration values are needed, specify them here.
    // Replace 'exampleKey' and 'exampleValue' with actual Helm values.
    values: {
        exampleKey: 'exampleValue',
    },
});

// Export the endpoint of the OpenID service.
// Replace 'serviceName' with the actual service name exposed by the OpenID Helm chart.
export const openidEndpoint = openidChart
    .getResourceProperty('v1/Service', 'serviceName', 'status')
    .apply(status => status.loadBalancer.ingress[0].ip || status.loadBalancer.ingress[0].hostname);
```

Explanation:
- Import the Kubernetes package from Pulumi.
- Define a Helm chart resource that points to the OpenID Connect Helm chart. Replace `'chart-name'`, `'chart-version'`, and `'https://helm-repo-url/'` with the proper chart name, version, and repository URL.
- Optionally, provide custom values to the chart with the `values` property.
- Export the endpoint of the OpenID service by querying the status of the Kubernetes Service created by the Helm chart deployment. The service name `'serviceName'` should also be replaced with the actual name used by the chart.

Make sure to install the necessary Pulumi plugins and NPM packages before running this program:

```bash
pulumi plugin install resource kubernetes v4.4.0
npm install @pulumi/kubernetes
```

Execute this program using the Pulumi CLI:

```bash
pulumi up
```

The `pulumi up` command will run the program, and provide you with a preview of the Kubernetes resources that Pulumi will deploy or update. After reviewing the changes, you will be prompted to proceed with the actual deployment.